202221021202120 has 64 divisors (see below), whose sum is σ = 493512133590000. Its totient is φ = 74273431019520.

The previous prime is 202221021202061. The next prime is 202221021202121. The reversal of 202221021202120 is 21202120122202.

It can be written as a sum of positive squares in 8 ways, for example, as 9545467501476 + 192675553700644 = 3089574^2 + 13880762^2 .

It is not an unprimeable number, because it can be changed into a prime (202221021202121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3626604495 + ... + 3626660254.

Almost surely, 2^{202221021202120} is an apocalyptic number.

202221021202120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

202221021202120 is an abundant number, since it is smaller than the sum of its proper divisors (291291112387880).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

202221021202120 is a wasteful number, since it uses less digits than its factorization.

202221021202120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7253264818 (or 7253264814 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 202221021202120 its reverse (21202120122202), we get a palindrome (223423141324322).

The spelling of 202221021202120 in words is "two hundred two trillion, two hundred twenty-one billion, twenty-one million, two hundred two thousand, one hundred twenty".